Why the study?
Does transient atrioventricular dissociation alter haemodynamic parameters compared to sinus rhythm in patients under general anaesthesia?
Does transient atrioventricular dissociation alter haemodynamic parameters compared to sinus rhythm in patients under general anaesthesia?
Transient atrioventricular dissociation during general anaesthesia causes a moderate decrease in arterial pressure and cardiac output without changing heart rate or peripheral resistance.
May warrant hemodynamic vigilance with transient AV dissociation under anesthesia; hypothesis-generating case report leaving broader applicability open.
Isorhythmic atrioventricular dissociation occurs frequently under general anaesthesia but is rarely recognized without continuous electrocardiographic monitoring. Since this arrhythmia was observed in about 50 per cent of the cases during the onset of the neuromuscular blocking action of alcuronium or pancuronium during halothane anaesthesia, the opportunity was taken to investigate the haemodynamic parameters during atrioventricular dissociation. In nine patients the haemodynamic parameters during atrioventricular dissociation as compared to sinus rhythm were characterized by an absence of significant differences in cardiac rate, by a mean lowering in arterial mean pressure of 14 per cent and by a mean decrease in cardiac output of 15 per cent. The calculated peripheral resistance remained unaltered
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Haldemann et al. (1973) studied this question.
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